* Fixed retry mechanism in external API calls

external_api/cdek.py

@@ -35,6 +35,7 @@ class CDEKClient:
 
         retries = 0
         while retries < self.MAX_RETRIES:
+            retries += 1
             prepared = self.session.prepare_request(request)
             r = self.session.send(prepared)
 

external_api/poizon.py

@@ -23,6 +23,7 @@ class PoizonClient:
 
         retries = 0
         while retries < self.MAX_RETRIES:
+            retries += 1
             prepared = self.session.prepare_request(request)
             r = self.session.send(prepared)